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Rolling mills
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Patent number 4,022,049
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Issue date May 10, 1977
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Firma Friedrich Kocks
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Hans Dieter Gerhards
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Tube rolling
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Patent number 4,020,667
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Issue date May 3, 1977
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Firma Friedrich Kocks
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Werner Demny
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Rolling mills
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Patent number 4,000,637
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Issue date Jan 4, 1977
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Firma Friedrich Kocks
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Hans-Dieter Gerhards
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Rolling mills
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Patent number 3,996,781
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Issue date Dec 14, 1976
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Firma Friedrich Kocks
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Norbert Nuckel
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Stretch reducing mills
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Patent number 3,952,570
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Issue date Apr 27, 1976
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Firma Friedrich Kocks
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Werner Demny
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...